Patents by Inventor Eun-Jun Cho

Eun-Jun Cho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9581366
    Abstract: An air conditioner having a first circulation channel which drives a thermodynamic cycle while normally circulating a refrigerant, a second circulation channel which is branched from an outlet of a condenser of the first circulation channel to recover oil from the refrigerant to a compressor and to cause the refrigerant to pass through a supercooling heat exchanger, and a third circulation channel which is directly branched from an evaporator of the first circulation channel to recover oil from the refrigerant and to the compressor and to cause the refrigerant to pass through the supercooling heat exchanger, thereby preventing the wet compression of the compressor to achieve improved reliability of the compressor, and preventing the degradation of heat-exchange performance.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: February 28, 2017
    Assignee: LG ELECTRONICS INC.
    Inventor: Eun Jun Cho
  • Patent number: 8671713
    Abstract: According to the present invention, an air condition comprises: a first compressor and a second compressor which compress a refrigerant through multiple stages; a condenser which condenses the refrigerant compressed by the second compressor; a first flow channel through which a portion of the refrigerant condensed by the condenser passes, in order to be cooled; a supercooling heat exchanger having a second flow channel for exchanging heat with the first flow channel; an expansion instrument which expands the refrigerant cooled by the supercooling heat exchanger; a shell-tube-type evaporator which evaporates the refrigerant expanded by the expansion instrument, and which is connected to a location requiring cold water via a water pipe to supply cold water to said location requiring cold water; a first bypass channel which guides the refrigerant condensed in the condenser to the second flow channel; a supercooling expander installed in the first bypass channel; and a second bypass channel which interconnects th
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: March 18, 2014
    Assignee: LG Electronics Inc.
    Inventor: Eun Jun Cho
  • Patent number: 8245948
    Abstract: A co-generation system is provided that includes a heat exchanger that heats water; a heat transfer path connected with the water heat exchanger that transfers heat; a hot water storage tank connected with the water heat exchanger and the water circulation path; a hot water storage water supply apparatus that supplies water in the hot water storage tank to the water circulation path; a water supply path connected with the water circulation path; a water supply apparatus that supplies water to the water supply path; and a hot water supply heat exchanger bypassing apparatus that bypasses the water supplied to the water circulation path from the hot water storage tank through the hot water supply heat exchanger.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: August 21, 2012
    Assignee: LG Electronics Inc.
    Inventors: Eun Jun Cho, Sim Bok Ha, Cheol Min Kim, Se Dong Chang
  • Publication number: 20120174614
    Abstract: According to the present invention, an air condition comprises: a first compressor and a second compressor which compress a refrigerant through multiple stages; a condenser which condenses the refrigerant compressed by the second compressor; a first flow channel through which a portion of the refrigerant condensed by the condenser passes, in order to be cooled; a supercooling heat exchanger having a second flow channel for exchanging heat with the first flow channel; an expansion instrument which expands the refrigerant cooled by the supercooling heat exchanger; a shell-tube-type evaporator which evaporates the refrigerant expanded by the expansion instrument, and which is connected to a location requiring cold water via a water pipe to supply cold water to said location requiring cold water; a first bypass channel which guides the refrigerant condensed in the condenser to the second flow channel; a supercooling expander installed in the first bypass channel; and a second bypass channel which interconnects th
    Type: Application
    Filed: June 10, 2010
    Publication date: July 12, 2012
    Applicant: LG ELECTRONICS INC.
    Inventor: Eun Jun Cho
  • Publication number: 20120174615
    Abstract: According to the present invention, an air conditioner comprises: a first circulation channel which drives a thermodynamic cycle while normally circulating a refrigerant; a second circulation channel which is branched from an outlet of a condenser of the first circulation channel to recover oil from the refrigerant to a compressor and to cause the refrigerant to pass through a supercooling heat exchanger; and a third circulation channel which is directly branched from an evaporator of the first circulation channel, to recover oil from the refrigerant and send the same to the compressor, and to cause the refrigerant to pass through the supercooling heat exchanger, thereby preventing the wet compression of the compressor to achieve improved reliability of the compressor, and preventing the degradation of heat-exchange performance.
    Type: Application
    Filed: June 10, 2010
    Publication date: July 12, 2012
    Applicant: LG ELECTRONICS INC.
    Inventor: Eun Jun Cho
  • Publication number: 20120137723
    Abstract: The present invention relates to an air conditioner, more particularly, it returns the oil from the shell and tube type of evaporator or directs the returned oil from the oil separator of the compressor into the compressor to reuse. And, it comprises an oil recovery flow path passing a condenser so that the oil and the refrigerant mixed with the oil is superheated or supercooled by using the heat discharged from heat-exchange units of the fin and tube type of condenser. Therefore, it is possible to improve the heat exchange performance of the evaporator.
    Type: Application
    Filed: May 10, 2010
    Publication date: June 7, 2012
    Applicant: LG Electronics Inc.
    Inventor: Eun Jun Cho
  • Publication number: 20080022708
    Abstract: Disclosed related to a co-generation according to the present invention comprising an electric generator, an engine, a waste heat recovery heat exchanger where the waste heat of the engine is recovered, a water boil heat exchanger connected with the waste heat recovery heat exchanger and the heat transfer path, a hot water storage tank connected with the water boil heat exchanger and the water circulation path, a water boil heat exchanger bypassing path formed at the water circulation path, a water boil heat exchanger bypassing valve installed at the water boil heat exchanger bypassing path.
    Type: Application
    Filed: April 13, 2007
    Publication date: January 31, 2008
    Inventors: Eun Jun Cho, Sim Bok Ha, Cheol Min Kim, Se Dong Chang
  • Publication number: 20080023961
    Abstract: Disclosed related to a co-generation comprising a heat exchanger heating water; a heat transfer path connected with the water heat exchanger to transfer heat; a hot water storage tank connected with the water heat exchanger and the water circulation path; a hot water storage water supply apparatus supplying water in the hot water storage tank to the water circulation path; a water supply path connected with the water circulation path; a water supply apparatus supplying water to the water supply path; and a hot water supply heat exchanger bypassing apparatus and bypassing the water supplied to the water circulation path from the hot water storage tank through the hot water supply heat exchanger.
    Type: Application
    Filed: April 12, 2007
    Publication date: January 31, 2008
    Inventors: Eun Jun Cho, Sim Bok Ha, Cheol Min Kim, Se Dong Chang
  • Publication number: 20080022707
    Abstract: Disclosed related to a co-generation according to the present invention has some advantages in that the heat of the refrigerant recovered at the supply heat exchanger is used for the water boiling as well as the heat recovered at the drive source is used for water boiling when the air conditioner is under the air-cooling mode and has a water boiling request by comprised as an electric generator; a drive source operating the electric generator; a waste heat recovery heat exchanger recovering the exhaust gas heat of the drive source; a water boil heat exchanger installed for boiling water; an air conditioner air-conditioning indoor air; a radiant heat exchanger radiating heat to outside; a supply heat exchanger installed on the refrigerant path of the air conditioner; and a heat transfer path connecting the waste heat recovery heat exchanger, water boil heat exchanger, and the radiant heat exchanger, and the supply heat exchanger.
    Type: Application
    Filed: April 13, 2007
    Publication date: January 31, 2008
    Inventors: Eun Jun Cho, Sim Bok Ha, Cheol Min Kim, Se Dong Chang
  • Patent number: 7305841
    Abstract: A cogeneration system is disclosed. The cogeneration system includes a heat pump type air conditioner, a waste heat recoverer to recover waste heat of a drive source, a waste heat supplying heat exchanger, which is heated by the waste heat recovered by the waste heat recoverer, and a bypassing unit, which causes the waste heat supplying heat exchanger to function as an evaporator during a heating operation of the heat pump type air conditioner. In accordance with this arrangement, it is possible to enhance the heating capacity of the heat pump type air conditioner irrespective of outdoor temperature, to prevent damage of compressors, and to minimize power consumption.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: December 11, 2007
    Assignee: LG Electronics Inc.
    Inventors: Yun Ho Ryu, Eun Jun Cho, Yoon Jei Hwang, Cheol Min Kim, Cheol Soo Ko
  • Patent number: 7275382
    Abstract: A cogeneration system including a generator, a drive source operating to drive the generator, and thus, to cause the generator to generate electricity, a heat pump type air conditioner including a compressor, a 4-way valve, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger, a heater to heat air, which has passed around the indoor heat exchanger after completing heat exchange with the indoor heat exchanger, and a waste heat recoverer to recover waste heat of the drive source during a heating operation of the heat pump type air conditioner, and to supply the recovered waste heat to the heater. The waste heat of the drive source can be re-used to heat air passing through the indoor heat exchanger, so that the heating performance of the heat pump type air conditioner is enhanced.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: October 2, 2007
    Assignee: LG Electronics Inc.
    Inventors: Eun Jun Cho, Yun Ho Ryu, Yeong Seop Choe, Jae Won Lee, Baik young Chung
  • Patent number: 7243505
    Abstract: A cogeneration system including an engine, which drives a generator to generate electricity, a cooling/heating unit, which includes at least one compressor, a four-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, to establish a heat pump type refrigerant cycle, and a refrigerant over-heating unit to supply heat of cooling water used to cool the engine to a suction-side refrigerant line of the compressor of the cooling/heating unit, and to supply heat of exhaust gas discharged from the engine to the suction-side refrigerant line of the compressor and to a discharge-side refrigerant line of the compressor. In accordance with the cogeneration system, it is possible to maximize absorption of the waste heat of the engine while preventing compressor malfunction, and thus, to increase the refrigerant condensing temperature of the indoor heat exchanger. Thus, an enhancement in heating performance is achieved.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: July 17, 2007
    Assignee: LG Electronics Inc.
    Inventors: Eun Jun Cho, Yun Ho Ryu, Young Seob Choi, Baik Young Cheong, Jae Won Lee
  • Patent number: 7240502
    Abstract: A method for controlling operations of an air-conditioner includes: a step in which when an operation load of an air-conditioner increases, if an outputted compressing capacity of the air-conditioner is smaller than a compressing capacity corresponding to the operation load and an operation frequency of the first compressor is a maximum frequency of the first compressor, a second compressor is operated; and a step in which when the operation load is reduced, if the outputted compressing capacity of the air-conditioner is greater than the compressing capacity corresponding to the operation load and the operation frequency of the first compressor is a minimum frequency of the first compressor, the second compressor is stopped.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: July 10, 2007
    Assignee: LG Electronics Inc.
    Inventors: Eun-Jun Cho, Yoon-Jei Hwang, Yun-Ho Ryu, Cheol-Min Kim, Chan-Ho Song, Chang-Min Choi, Ji-Young Jang, Young-Seob Choi, Woo-Ho Cha, Seung-Youp Hyun, Won-Hee Lee
  • Patent number: 7240504
    Abstract: A cogeneration system including an engine, which drives a generator to generate electricity, a cooling/heating unit, which comprises at least one compressor, a four-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, to establish a heat pump type refrigerant cycle, and an exhaust heat consuming heating unit to supply heat of exhaust gas discharged from the engine to a heat exchanging zone of the indoor heat exchanger of the cooling/heating unit, and thus, to heat a confined space. Since waste heat generated from the engine is directly used in the cooling/heating unit, an enhancement in indoor heating efficiency is achieved.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: July 10, 2007
    Assignee: LG Electronics Inc.
    Inventors: Eun Jun Cho, Yun Ho Ryu, Young Seob Choi, Baik Young Cheong, Jae Won Lee
  • Publication number: 20070012058
    Abstract: A cogeneration system is constructed such that the waste heat recovered from the engine is supplied to the heat pump type air conditioner through the waste heat supplying heat exchanger, thereby maximizing heating capacity and efficiency. A waste heat supplying heat exchanger connecting conduit is formed so as to guide a refrigerant emerging from an indoor unit to enter an outdoor unit through the waste heat supplying heat exchanger, so that the flow path between the waste heat supplying heat exchanger and the heat pump type air conditioner is minimized, thereby reducing installation costs and flow resistance.
    Type: Application
    Filed: July 11, 2006
    Publication date: January 18, 2007
    Applicant: LG ELECTRONICS INC.
    Inventors: Eun Jun CHO, Sim Bok HA, Baik Young CHUNG, Cheol Min KIM, Se Dong CHANG
  • Publication number: 20070012418
    Abstract: A cogeneration system has an advantage that a cogeneration section is divided into a main unit and a sub unit, and an engine and a generator are included in the main unit, to thus enable the main unit and the sub unit to be installed at different locations, so that the main unit can be installed on the ground floor or basement of a building to thus minimize building vibrations or noises generated by a load, and the sub unit can be installed near to an air conditioner to thus minimize the length of a refrigerant passage, thereby reducing the installation cost and the flow passage resistance.
    Type: Application
    Filed: July 11, 2006
    Publication date: January 18, 2007
    Applicant: LG ELECTRONICS INC.
    Inventors: Eun Jun CHO, Sim Bok HA, Baik Young CHUNG, Cheol Min KIM, Se Dong CHANG
  • Publication number: 20060283967
    Abstract: A cogeneration system is disclosed which includes a generator, a drive source for driving the generator, a waste heat supplying heat exchanger for enhancing the heating performance of a heat pump type air conditioner, an auxiliary heating heat exchanger using the waste heat of the drive source as a heat source for heating indoor air, and a regeneration heat supplying heat exchanger using the waste heat of the drive source as a heat source for regenerating a dehumidifier. The cogeneration system can use the waste heat of the drive source for diverse purposes in accordance with the indoor environment, and can have a maximal efficiency.
    Type: Application
    Filed: May 16, 2006
    Publication date: December 21, 2006
    Applicant: LG Electronics Inc.
    Inventors: Eun Jun CHO, Sim Bok HA, Baik Young CHUNG, Cheol Min KIM, Se Dong CHANG
  • Publication number: 20060123822
    Abstract: A cogeneration system including a generator, a drive source operating to drive the generator, and thus, to cause the generator to generate electricity, a heat pump type air conditioner including a compressor, a 4-way valve, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger, a heater to heat air, which has passed around the indoor heat exchanger after completing heat exchange with the indoor heat exchanger, and a waste heat recoverer to recover waste heat of the drive source during a heating operation of the heat pump type air conditioner, and to supply the recovered waste heat to the heater. The waste heat of the drive source can be re-used to heat air passing through the indoor heat exchanger, so that the heating performance of the heat pump type air conditioner is enhanced.
    Type: Application
    Filed: June 20, 2005
    Publication date: June 15, 2006
    Applicant: LG Electronics Inc.
    Inventors: Eun Jun Cho, Yun Ho Ryu, Yeong Seop Choe, Jae Won Lee, Baik Young Chung
  • Publication number: 20060037354
    Abstract: An indoor unit of an air conditioner, includes a blower fan disposed within a casing; and a heat exchanger for heat-exchanging between refrigerant and air flowing by the blower fan, said heat exchanger connected to a refrigerant inlet pipe for introducing refrigerant and a refrigerant outlet pipe for discharging a refrigerant, wherein the refrigerant inlet pipe is connected to a side of the heat exchanger, where a flow velocity of the air passing through the heat exchanger is relatively high. Accordingly, efficiency of heat exchange between the indoor air and refrigerant can be improved, and thus cooling and heating efficiency of the indoor air is improved, thereby improving performance of the air conditioner. Also, by reducing the operation time of the air conditioner, power consumption can be reduced.
    Type: Application
    Filed: January 12, 2005
    Publication date: February 23, 2006
    Inventors: Eun-Jun Cho, Yun-Ho Ryu, Yoon-Jei Hwang, Ji-Young Jang
  • Publication number: 20050241324
    Abstract: Provided is a defrosting method for an air conditioner capable of improving an efficiency of a heating mode by supplying the heating mode to a user as long as possible in a condition that a frost deposit is hardly generated. For this purpose, the defrosting method for the air conditioner comprises the steps of; establishing a defrosting initiation temperature of the air conditioner; and performing the defrosting operation based on the established defrosting initiation temperature.
    Type: Application
    Filed: February 16, 2005
    Publication date: November 3, 2005
    Inventors: Eun-Jun Cho, Ji-Young Jang, Yoon-Jei Hwang, Won-Jae Choi, Yun-Ho Ryu